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1220031323000 = 2353759250069
BaseRepresentation
bin10001110000001111100…
…010001001101101111000
311022122010002011202022022
4101300033202021231320
5124442111004314000
62332250305214012
7154100341065440
oct21601742115570
94278102152268
101220031323000
1143045996a596
1217854a031308
138b08260b859
144309aa45120
1521b08592585
hex11c0f889b78

1220031323000 has 192 divisors, whose sum is σ = 3319016126400. Its totient is φ = 411198470400.

The previous prime is 1220031322981. The next prime is 1220031323011. The reversal of 1220031323000 is 3231300221.

It is a super-2 number, since 2×12200313230002 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220031323000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24341966 + ... + 24392034.

It is an arithmetic number, because the mean of its divisors is an integer number (17286542325).

Almost surely, 21220031323000 is an apocalyptic number.

1220031323000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220031323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659508063200).

1220031323000 is an abundant number, since it is smaller than the sum of its proper divisors (2098984803400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220031323000 is an equidigital number, since it uses as much as digits as its factorization.

1220031323000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50215 (or 50142 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1220031323000 its reverse (3231300221), we get a palindrome (1223262623221).

The spelling of 1220031323000 in words is "one trillion, two hundred twenty billion, thirty-one million, three hundred twenty-three thousand".